Apparatus for delivering acid and alkaline liquids in measured quantities.



PATEUTED Jmm'iz, 1 906.

v M. MEYER. APPARATUS FOR DELIVERING ACID AND ALKALINE LIQUID.

IN MEASURED TITIBS Arrmomxoxi FILED no.4; m5,

if: 5 :1: k j 5%;

STATES PATENT OFFICE.- v MEYER, OFBERLIN, GERMANY. j APPARATUS FOR DELlVhR'NG ACID AND ALKALINE LIQUIDS IN MEASURED QUANTITIES.

Patented June 12,1906.

To all it may concern: -Be it known that I, MAX MEYER, a subject of the King of Prussia,'German Emperor, and

a resident of Berlin, German (whose postofiice address is N o. 22 In den Zelten, Berlin,

' Prussia, German Empire,) have invented a new -and useful Apparatus for Delivering Acid and Alkaline Liquids in Measure Quantities, of which the following is a speci- The present invention relates to improvefication.

ments in an apparatus for delivering quids mmeasured quantities, and the subject of the invention is to so, construct theapparatus' as to make itz'adapted for deliverm acid or alkahne liquids. It is essential to t at effect that all the parts which come into contact Wlth the liquid are'constructed of material thatresists the action'of. acids and alkalies and thatthe whole apparatus be as simple as possible.

The li uid to be delivered is contained in a.

vessel 0 glass or otherresisting material,

. provided with a tubular extension in which the double iston of glass, vulcanite, indie-- rubber, or t e likematerial is displaced. in

such a manner that the s ace between the two pistons communicates either-with the vessel or vwithth'e atmosphere. The piston-rod, which passes throughv the top of the vessel, is preferably hollow, with a detachable handle at the upper end and a slot at the bottom-above the top piston, so thatjthe vessel can be charged with liquid through the hollow -piston-rod;

1 This pisto'ngrod is held in its normal positionthat"iS, in the position wherein the discharge-opening of the vessel is kept closed by the lower pistonby a spring placed outside the vessel between the to of the-same and the detachable handle oft e piston-rod.

The invention is illustrated on the annexed drawing, which shows ,theapparatus insection. 4

The vessel g, conta ning the iquid is provided with a tubular extension p, in which the double piston 1' r is displaced in such a man'- nor that the space between the two pistons communicates either with the vessel or with the atmosphere. The piston r r, isactuated by a hollow iston-rod which passes through a glandont e top of the vessel. The outer end .of the piston-rod is closed by a'suitable knob adapted to be removed to" ermit of fill ing the vessel. through said'r' ashereinafter' described.: The travel of, the double 7 piston rr is so that in its normal-position the two pistons being discharged.

*structe d e -v ss l h v g one extremitythereof, a double piston adaptequal to the volume of space between thetwo pistons. At the end of the downward piston r is in the tubular extension p and the stroke the top piston 1 will be inand the bottom piston r clear of the tubular extension therefore permitting the liquid between t e The piston descendsbya pressure being applied to the hollow pisto'n-rod-b, which overcomes the compression of th spring c, I

the tendency of which is to keep the piston in its normal position, which is determined by a stop (1 on the piston-rod b. The} s ring 0 is placed between the top of the-vesse and the andle aysecured on the upper 'end of the" piston-rod. The vessel is charged through.

the hollow piston-rod, which, to that purpose, is rovided with a slot t above the piston 1', w ch allows the liquid to pass throng? 7 the rod into the vessel. The vessel itse together with the tubular extension, is cons'tructed of glass or other material which resists the actlon of acids and alkalies, and the double iston and the piston-rod are also coni .of resistin material, such as glass, vulcanite, india-rubber,'and the like. he tubular extension is slightly flared out both at the upper and lower end to facilitate the insertion of the double iston, and the lower piston 1" is somewhat cl iamfered for the better discharge of the whole of the liquid between the two pistons.

What I claim, and desire to secure by Let- 'ters Patent of the United States,'. is'- 1. In an apparatus for delivering liquid in measured quantities, the combination of a closed vessel having a tubular extension at one extremity thereof, a double piston ada ted to move in and partiallyout of said tut? lat extension, and a piston-rod passing through the other, extremity of the vessel, said piston-rod being hollow and rovided with an o ening communicating wit the interior of t e vessel and an opening exterior of the vessel whereb the vessel can .be filled with liquid throng said rod. v

-2 In an apparatus for delivering liquid in measured quantities, the combination of a a tubular extension atsaid piston-rod being hollow and ed to movejn and partially out of said tubular extension, an a piston-rod passing through the other extremity of the vessel, said piston-rod being hollow and rovided with an o ening communicating wit the interior of tiie vessel and an opening exterior of the vessel, together with means for closing said exterior opening.

3. In an apparatus for delivering liquid in measured quantities, the combination of a closed vessel having a tubular extension at one extremity thereof, a double piston ada t ed to move and partially out of said tu ular extension, and a piston-rod passing through the otherextremity of the vessel, rovided with an '0 ening communicating wit 1 the interior of tlie vessel and an opening exterior of the vessel, together with means for closing said exterior opening, said means comprising a knob adapted to serve as a handle for the piston-rod.

4. In an apparatus for delivering liquid in measured quantities, the combination of a closed vessel having a tubular extension at one extremity thereof, a double piston ada ted to move in and partially out of said tu ular extension, and a piston-rod passing through the other extremity of the vessel, said piston-rod being hollow and provided withan opening communicating with them-. terio'r of the vessel and an sparring exterior of the vessel through which liquid can be sup plied to the vessel, together with a spring normally tending to draw the double plston toward the interior of the vessel,

5. In an apparatus for delivering liquid in measured quantities, the combination of a closed vessel having a tubular extension at one extremity thereof, a double piston adapted tomove in and partially out of said tubular extension, and a piston-rod passing through the other extremity of the vessel, said piston-rod being hollow and rovided with an o ening communicating wit the interior of tile vessel and an opening exterior of the vessel a knob adapted to close the outer end of the piston-rod, and a spring normally tending to draw the double piston toward the interior of the vessel, said s ring being located between the knob on t e end of the piston and one extremity of the vessel.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HENRY HASPER, WQLDEMAR HAUPT. 

